<template>
  <!--列表-->
  <div class="list-container">
    <div class="sortList clearfix">
      <div class="center">
        <!--banner轮播-->
        <!-- <div class="swiper-container" ref="bannerSwiper">
          <div class="swiper-wrapper">
            <div
              class="swiper-slide"
              v-for="(banner, index) in bannerList"
              :key="banner.id"
            >
              <img :src="banner.imgUrl" />
            </div>
          </div> -->
          <!-- 如果需要分页器 -->
          <!-- <div class="swiper-pagination"></div> -->

          <!-- 如果需要导航按钮 -->
          <!-- <div class="swiper-button-prev"></div>
          <div class="swiper-button-next"></div>
        </div> -->

        <SwiperLoop :bannerList="bannerList" :bannerSwiper="'bannerSwiper'"></SwiperLoop>

      </div>

      <div class="right">
        <div class="news">
          <h4>
            <em class="fl">尚品汇快报</em>
            <span class="fr tip">更多 ></span>
          </h4>
          <div class="clearix"></div>
          <ul class="news-list unstyled">
            <li><span class="bold">[特惠]</span>备战开学季 全民半价购数码</li>
            <li><span class="bold">[公告]</span>备战开学季 全民半价购数码</li>
            <li><span class="bold">[特惠]</span>备战开学季 全民半价购数码</li>
            <li><span class="bold">[公告]</span>备战开学季 全民半价购数码</li>
            <li><span class="bold">[特惠]</span>备战开学季 全民半价购数码</li>
          </ul>
        </div>
        <ul class="lifeservices">
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">话费</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">机票</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">电影票</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">游戏</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">彩票</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">加油站</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">酒店</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">火车票</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">众筹</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">理财</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">礼品卡</span>
          </li>
          <li class="life-item">
            <i class="list-item"></i>
            <span class="service-intro">白条</span>
          </li>
        </ul>
        <div class="ads">
          <img src="./images/ad1.png" />
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapState } from "vuex";
import Swiper from "swiper"; //引入swiper的js
// import "swiper/css/swiper.min.css"; //引入swiper的css

export default {
  name: "ListContainer",
  mounted() {
    this.getBannerList();
    //在这里直接去实例化swiper对象，最终不可用
    //原因： 是因为我们在实例化swiper的时候，页面的轮播图结构还没有完全形成
    //       因为页面的结构是根据，动态请求回来的数据而动态创建的，数据没回来，及结构就不可能形成

    // 自己可以添加延迟定时器，解决结构没有形成的问题，但是不好，用户体验极差
    // setTimeout(() => {
    // new Swiper(".swiper-container", {
    //   // direction: "vertical", // 垂直切换选项
    //   loop: true, // 循环模式选项

    //   // 如果需要分页器
    //   pagination: {
    //     el: ".swiper-pagination",
    //   },

    //   // 如果需要前进后退按钮
    //   navigation: {
    //     nextEl: ".swiper-button-next",
    //     prevEl: ".swiper-button-prev",
    //   },

    //   // 如果需要滚动条
    //   // scrollbar: {
    //   //   el: ".swiper-scrollbar",
    //   // },
    // });
    // }, 2000);
  },

  methods: {
    getBannerList() {
      this.$store.dispatch("getBannerList");
    },
  },

  computed:{ 
    ...mapState({
      bannerList: (state) => state.home.bannerList,
    }),
  }
  // 采用watch可以保证  数据一定先回来，然后才去实例化swiper,也不行
  // 原因： 因为数据回来是回来的，数据回来后，页面形成是需要时间的
  //
  // watch: {
  //   bannerList: {
  //     immediate:true,  //这里加immediate没任何意义，只是为了让两遍代码保持一致
  //     handler(newVal, oldVal) {
  //       // this.$nextTick 等待页面最近一次更新完成后执行回调
  //       this.$nextTick(() => {
  //         new Swiper(this.$refs.bannerSwiper, {
  //           // direction: "vertical", // 垂直切换选项
  //           loop: true, // 循环模式选项

  //           // 如果需要分页器
  //           pagination: {
  //             el: ".swiper-pagination",
  //           },

  //           // 如果需要前进后退按钮
  //           navigation: {
  //             nextEl: ".swiper-button-next",
  //             prevEl: ".swiper-button-prev",
  //           },

  //           // 如果需要滚动条
  //           // scrollbar: {
  //           //   el: ".swiper-scrollbar",
  //           // },
  //         });
  //       });
  //     },
  //   },
  // },
};
</script>

<style lang="less" scoped>
.list-container {
  width: 1200px;
  margin: 0 auto;

  .sortList {
    height: 464px;
    padding-left: 210px;

    .center {
      box-sizing: border-box;
      width: 740px;
      height: 100%;
      padding: 5px;
      float: left;
    }

    .right {
      float: left;
      width: 250px;

      .news {
        border: 1px solid #e4e4e4;
        margin-top: 5px;

        h4 {
          border-bottom: 1px solid #e4e4e4;
          padding: 5px 10px;
          margin: 5px 5px 0;
          line-height: 22px;
          overflow: hidden;
          font-size: 14px;

          .fl {
            float: left;
          }

          .fr {
            float: right;
            font-size: 12px;
            font-weight: 400;
          }
        }

        .news-list {
          padding: 5px 15px;
          line-height: 26px;

          .bold {
            font-weight: 700;
          }
        }
      }

      .lifeservices {
        border-right: 1px solid #e4e4e4;
        overflow: hidden;
        display: flex;
        flex-wrap: wrap;

        .life-item {
          border-left: 1px solid #e4e4e4;
          border-bottom: 1px solid #e4e4e4;
          margin-right: -1px;
          height: 64px;
          text-align: center;
          position: relative;
          cursor: pointer;
          width: 25%;

          .list-item {
            background-image: url(./images/icons.png);
            width: 61px;
            height: 40px;
            display: block;
          }

          .service-intro {
            line-height: 22px;
            width: 60px;
            display: block;
          }

          &:nth-child(1) {
            .list-item {
              background-position: 0px -5px;
            }
          }

          &:nth-child(2) {
            .list-item {
              background-position: -62px -5px;
            }
          }

          &:nth-child(3) {
            .list-item {
              background-position: -126px -5px;
            }
          }

          &:nth-child(4) {
            .list-item {
              background-position: -190px -5px;
            }
          }

          &:nth-child(5) {
            .list-item {
              background-position: 0px -76px;
            }
          }

          &:nth-child(6) {
            .list-item {
              background-position: -62px -76px;
            }
          }

          &:nth-child(7) {
            .list-item {
              background-position: -126px -76px;
            }
          }

          &:nth-child(8) {
            .list-item {
              background-position: -190px -76px;
            }
          }

          &:nth-child(9) {
            .list-item {
              background-position: 0px -146px;
            }
          }

          &:nth-child(10) {
            .list-item {
              background-position: -62px -146px;
            }
          }

          &:nth-child(11) {
            .list-item {
              background-position: -126px -146px;
            }
          }

          &:nth-child(12) {
            .list-item {
              background-position: -190px -146px;
            }
          }
        }
      }

      .ads {
        margin-top: 5px;

        img {
          opacity: 0.8;
          transition: all 400ms;

          &:hover {
            opacity: 1;
          }
        }
      }
    }
  }
}
</style>
